J10405643–0103584
| J10405643–0103584 | |
|---|---|
 SDSS image of J10405643–0103584 | |
| Observation data (J2000.0 epoch) | |
| Constellation | Sextans |
| Right ascension | 10h 40m 56.42s[1] |
| Declination | −01° 03′ 58.65″[1] |
| Redshift | 0.250242[1] |
| Heliocentric radial velocity | 75,021 ± 10 km/s[1] |
| Distance | 3,622.5 ± 253.6 Mly (1,110.67 ± 77.75 Mpc)[1] |
| Group or cluster | SDSS CE J160.241898–01.069106 |
| Magnitude (J) | 14.66[1] |
| Characteristics | |
| Type | BrCIG |
| Size | ~656,800 ly (201.39 kpc) (estimated)[1] |
| Other designations | |
| 2dFGRS N294Z024, 2MASX J10405643–0103584, [BHF2008] 23, LEDA 1127620, OGC 0073, SDSS J104056.42–010358.7, WHL J104056.4–010358 BCG[1] | |
J10405643–0103584 also known as 2MASX J10405643–0103584 is a massive lenticular galaxy in the constellation of Sextans. The redshift of the galaxy has been estimated as (z) 0.25[1] and it is the brightest cluster galaxy (BCG) in the center of a low-mass galaxy cluster called SDSS CE J160.241898–01.069106.[2][3]
Description
[edit]The galaxy is described as one of the most massive galaxies known, with a measured absolute R-band magnitude of -24.27 and an R-band size that is approximately 1.30 kiloparsecs.[4] It is classified as a supermassive early-type elliptical galaxy whose inner profile is best described by a shallow core, with a velocity dispersion calculated as 424 kilometers per second.[5] The total bulge and disk radius has been estimated as 29.34 and 18.75 kiloparsecs respectively based on its de Vaucouleurs bulge and exponential disk model.[6] The disk of the galaxy itself has an inclination of 2° at a position angle of 74° and a measured disk exponential scale length of 12.43.[3]
The galaxy has a symmetric morphology. Several satellite galaxies of low masses surround it, and it is also bulge-dominated, with a bulge fraction ratio roughly estimated as B/T = 0.66, making this the highest known when studied, suggesting it transitioned into a lenticular galaxy from an elliptical galaxy when its galactic disk was reformed via galaxy mergers. The total star formation is estimated to be 9.3 M☉ per year with a total stellar mass of 4.7 × 1011 M☉ based on a study published in 2018. It is offset by 15.5 kiloparsecs from the X-ray peak of the cluster.[2]
References
[edit]- 1 2 3 4 5 6 7 8 9 "NED Search results for J10405643–0103584". NASA/IPAC Extragalactic Database. Retrieved 2026-05-20.
- 1 2 Bogdán, Ákos; Lovisari, Lorenzo; Kovács, Orsolya E.; Andrade-Santos, Felipe; Jones, Christine; Forman, William R.; Kraft, Ralph P. (2018-12-17). "Detection of a Star-forming Galaxy in the Center of a Low-mass Galaxy Cluster". The Astrophysical Journal. 869 (2): 105. arXiv:1811.04958. Bibcode:2018ApJ...869..105B. doi:10.3847/1538-4357/aaee71. ISSN 0004-637X.
- 1 2 Ogle, Patrick M.; Lanz, Lauranne; Nader, Cyril; Helou, George (2016-01-26). "Superluminous Spiral Galaxies". The Astrophysical Journal. 817 (2): 109. arXiv:1511.00659. Bibcode:2016ApJ...817..109O. doi:10.3847/0004-637x/817/2/109. ISSN 0004-637X.
- ↑ Bernardi, M.; Sheth, R. K.; Nichol, R. C.; Miller, C. J.; Schlegel, D.; Frieman, J.; Schneider, D. P.; Subbarao, M.; York, D. G.; Brinkmann, J. (April 2006). "A Search for the Most Massive Galaxies: Double Trouble?". The Astronomical Journal. 131 (4): 2018–2034. arXiv:astro-ph/0510696. Bibcode:2006AJ....131.2018B. doi:10.1086/499770. ISSN 0004-6256.
- ↑ Bernardi, M.; Hyde, J. B.; Fritz, A.; Sheth, R. K.; Gebhardt, K.; Nichol, R. C. (2008-12-11). "A search for the most massive galaxies - II. Structure, environment and formation". Monthly Notices of the Royal Astronomical Society. 391 (3): 1191–1209. arXiv:0809.2602. Bibcode:2008MNRAS.391.1191B. doi:10.1111/j.1365-2966.2008.13876.x. ISSN 0035-8711.
- ↑ Hyde, J. B.; Bernardi, M.; Sheth, R. K.; Nichol, R. C. (2008-12-21). "A search for the most massive galaxies - III. Global and central structure". Monthly Notices of the Royal Astronomical Society. 391 (4): 1559–1576. arXiv:0809.2609. Bibcode:2008MNRAS.391.1559H. doi:10.1111/j.1365-2966.2008.13966.x. ISSN 0035-8711.
External links
[edit]- J10405643–0103584 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
